Safety device for mangles



W. J. ASHILR.

SAFETY DEVICE FOR MANGLES.

APPLICATION 'r'lLl ID FEB. 27, I918.

1,354,872. I Patented Oct. 5,,1920.

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APPLICATION FILED 5E8. 27, I918.

Patented 0m 5,1920. 2 SHEETSSHET 2 ?AT.ENT OFFICE.

WILLIAM J. ASHER, OF NEVTARK, NEW JERSEY.

SAFETY DEVICE FOR MTANGLES.

Original application filed December 14, 1918, Serial No. 13?,030.

February :27, 1918.

Be it known that l, li'inmnii J. Asrmn, a citizen of the United States, residing at Newark, in the county of Essex, State of New Jersey, have invented certain new and useful Improvements in Safety Devices for t iangles, of which the following is a speci fication. c

This application which is a division of my application No. .l37,(l30 filed December let, 1916 relates to a safety device especially adapted to used on such apparatus as ironing orsimilar machines. he principal object of the invention is to provide a device for throwing off the dr'ving power to the machine in case the operators lingers are drawn between the feed roll and board or too thick a piece of work is attempted to be introduced into the machine. @ther objects will be apparent from the description taken in connection with the drawings in which,

Figure 1 is a side elevation of a mangle or ironing machine showing the safety device as applied thereto;

Fig. 2 is a section in elevation through the feed board and showing the feed roller and the method of mounting the same;

Fig. 3 is a fragmentary plan view showing the driving and driven pulleys and the. crank on the end of the spring actuated rod for actuating the belt shifting means.

The machine in connection with which I have illustrated the safety device comprises abase 20 having the side frames 21 between which is rotatably mounted the steam drum 22 which has a smooth periphery around which the material to be ironed is adapted to be carried by an endless apron 23. A bracket 24 is attached to one of the side frames 21 and carries a shaft 25 on which are mounted the tight and loose pulleys 116 and 117, by means of which the entire ma chine is driven. The shaft 25 carries a pinion 26 which meshes with a spur gear 27, and mounted on the same axis and adapted to rotate with the latter is a pinion 28 which in turn drives the spur gear 29 rigidly connected with the drum. As shown in Fig. 1, the endless apron passes over a roller 30 at the top of the machine, then around adjustable roller 31, thence downward and successively around the rollers 32. 148 ant 3 1- to the roller 35, then around the periph cry of the drum to roller 36 which is located Specification of Letters Patent.

Patented Oct. 5, 19.20.

Divided and this application filed Serial No. 219,426.

near and parallel to the roller 35 at i finally returning to roller The material to be ironed is fed in over the roller from a feed table 37 shown in dotted in As shown in this figure, the upper surface of the feed table is arranged substan tially tangential to the roller 35 and has a roller rotatatively mounted in front of the same so thathe sad surface is also tangential to the latter roller. A. series of tapes 39 are arranged to pass around the roller 38 over the top surfa e of the feed table, and around the forward edge of the same returning underneath the l a i roller. A feed roller 4-1 is arranged above the table and adapted to cooperate with the tapes 39 so that the material to be ironed is fed to the machine between said roller and the tapes. As shown in Fig. 2, this roller is rotatively mounted at its ends in the arms 42, which in turn are rigidly carried by the shaft 43 supported by the brackets 44s on the side frames. The shaft projects laterally from one side of the machine and carries a depending rod or latch member l5 for a purpose later to he describes As shown in plan in Fig. 3 and in elevation in Fig. 1, the belt is adapted to be shifted from the loose pulley 116 to the tight pulley 11'. by a shifter 75 which is supported by an arm 76 pivoted at its lower end as at 77. The upper end of this arm is connected by means of a link 78 with a crank 79 rigidly fastened to the rod or rock shaft 80 which is carried by one of the side frames of the machine by means of the bearings 81 and 82. A torsion spring 83 is coiled around a portion of the rod 80 and has one end thereof connected to the hearing 81 and the other end to the shaft, the arrangement being such that when the spring is placed under tension it tends to turn the rod 80 in such a direction as to shift the belt from the tight to the loose pulley. At its upper end the rod 80 is proviced with a disk 84 which has a notch 85 and a stop shoulder 86 formed therein which are adapt ed to cooperate with the end of the rod or latch member 45 carried by the shaft 13.

lVhen the belt is shifted from the loose to the tight pulley by means of the handle 87 to start the machine the torsion spring 83 will be stressed and the rod 30 turned so that the notch 85 will register with the end of the rod 45, thereby latching the'rod 80 with the torsion spring 83 in tensioned position. If for any reason the feed'roller a1 is swung out of position it will move the rod 45 out'of the notch 85, thereby permitting the torsion spring 83 to exert its energy and throw the belt from thetight to the loose pulley, thus throwing oil the driving means and stopping the machine.

Although this 'device has'been shown and described in connection with a particular form of ironing machine, it is obvious'that it is adapted for other types of machines and that many changes may he made therein without departing from the spirit of the invention. For example although a machine driven by means of a belt has been shown and described it 1s obvlous that the safety device is adapted for use in connection with machines driven in other ways.

Having thus described the invention, what is claimed and desired to be secured by Letters Patent is: V p V 1. In a mangle, a feed board, a feed roll cooperatingwith said board, a shaft above the roll, depending arms on said shatt having a bearing for the roll, driving means for the mangle, a rotatably mounted rod having a crank, a spring tendingto rotate said rod,

connectionsbetween'the crank and driving means whereby rotation of the rodthrows ofi'the driving means, and an arm on said shaft releasably engaging the rod iorholding the spring tensioned and adapted to be released roll. V

2. In a mangle, a feed board, a feed roll by swinging movement of the feed cooperating with said board mounted tobe displaced when a relatively thick object comes between the roll and board, means to drive the mangle, a rotatably mounted rod, a spring associated with said rod, a

latch member movable'with said roll when the latter is displaced adapted to releasably hold said rod with the spring under tension,

tween the roll and board, means to drive.

the mangle, a spring actuated member tendmg to throw off sald driving means, and a latch element associated with the roll supporting means releasablyengaging said member, whereby the member is released and the driving means thrown off when the roll is swung out of position.

4. In a mangle, a feed'board, a feed roll cooperating with said board to feed goods to the mangle, means supporting said roll for displacement when an abnormally thick object comes between the roll and board,

means to drive the mangle, a member adapted to throw off said driving means, means normally forcing'said member in the throw off direction, and an element associated with the first mentioned means releasably engaging sald member adapted to release said "member when the roll is displaced.

5. In a mangle, in combination, driving means, a rotatlvely mounted rod, spring means arranged to rotate said rod to throw off the driving means, a feed roll mounted for rotation about its own axis and for swinging movement about an axis exterior thereto, and latching means under the con trol of said roll adapted to hold said spring means stressed and to be released by swinging movement of said roll, said latching means including an arm directly movable with said roll in its swinging motion and a member on said, rod directlyengaged by said arm. r

In testimony whereof I afiix my signature.

WILLIAM J. ASHER. 

